Evaluate HELP PLEASE!!
a)94^-1/2

94i

Step-by-step explanation:

94^-1/2 is the square root of -94 which is an imaginary number

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest